at 2021 I want to see bitcoins at 50000 at the least. 2019 to 2020 will be the breakthrough for bitcoins and I think as the supply keeps reducing and the demand of it becoming more, it will make the price go higher.
why not say $ 100k maybe it will be even cooler
It seems that the graph you provided can provide clues to the movement of bitcoin prices this year seems likely to fall and maybe 2019 will indeed start to wake up and will start doing price recovery.
but I only say 2019 is not the year to go to the moon, let's see it better at least not too many traders are trapped in selling their bitcoins and experiencing heavy losses, making it also a long-term investment
I am not a bitcoin expert or a good trader in analyzing prices, but I am happy to share my analysis here about the price of bitcoin that I might be able to make a discussion here, so what do you think about this
https://twitter.com/Blackjincrypto/status/10107495957631057922012 - Bitcoin halving
2013 - go to the moon
2014 - hacking problem from MTGOX and others
2015 - Bitcoin prices wake up from the downturn
2016 - Bitcoin halving
2017 - go to the moon
2018 - the bitcoin problem is usually about HACK
2019 - Bitcoin prices wake up from the downturn
2020 - Bitcoin halving
2021 -

You know it
http://www.bitcoinblockhalf.comSo if you hear the news saying there are some bitcoin trading sites hacked and how much in 2018 this might just be a coincidence

I don't think my analysis predictions are correct and hopefully not true, but if you have other predictions please share here, I will definitely appreciate that

edit to add analysis images
To some extent you have predicted well and to me your analysis is right. This year started with news of banning and hacking and we can see the infect of that on bitcoin and altcoins market. I believe that bitcoin is actually going to wake up from it downward movements or downturn in 2019. It means what happened in 2018 may not repeat itself again.
at least this analysis helps where every 4 years, when 2014 and 2018 have in common, at least 2022 later everyone can get ready for control not too panic at the market situation like this is not even too shocked anymore